Please be aware that Lyyti is developed constantly and your view might not match 100% with the view described in this article.
When your domain is verified in Lyyti, you can personalise your email sending addresses.
Under Your Next Gen Event / Settings / Advanced, you can set up the default email sending address of your event.
Every new email you create after will have that sending address by default. Note that this does not affect emails created prior to the change.
It is possible not to use that default. You can customise the sending address of each email manually from Your Next Gen Event / Communication / Your email.